G Nome wrote:I have the reamer from when I replaced the glow plugs. I will give it a go. Good call.
Not quite sure what you mean by if it starts better on one cylinder.
What I meant was: If carbon clustered around the plugs is the problem, then the one plug you reamed would be firing better. You have it good with a 617, access to the plugs is easy. On mine plug removal takes work and there is significant risk that the plug will seize and shear off.